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History of earthquakes in Kansas^*

STATE GEOLOGICAL SURVEY OF KANSAS

Abstract

Thirty-eight earthquakes which have affected Kansas are listed and described; 22 of these have occurred within the state's boundaries since 1867. There were 2 moderately strong ones—on April 24, 1867, and January 7, 1906. A frequency plot reveals that a moderately strong earthquake occurs in the state approximately every 40 to 45 years.

A correlation of earthquakes with structural features in Kansas indicates that the Nemaha anticline is still tectonically active and that the earthquakes are probably occurring along a series of faults on the east side of the structure. Other positive structural elements such as the Cambridge arch and Central Kansas uplift are considered passive. The state, as a whole, is and probably always has been relatively stable.

Footnotes

^* Manuscript received for publication June 25, 1955.

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